arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1112.2298hep-phhep-ex
收藏

希格斯玻色子的多轻子信号

Multi-Lepton Signals of the Higgs Boson

Emmanuel Contreras-Campana, Nathaniel Craig, Richard Gray, Can Kilic, Michael Park, Sunil Somalwar, Scott Thomas

摘要:

根据LHC多轻子搜索技术的最新进展,评估了在多轻子通道中搜索希格斯玻色子玻色子的可能性。总的多轻子希格斯信号超过了四轻子镀金共振模,但分布在许多通道上,具有相同符号的双轻子,三轻子和四轻子终态。虽然任何单独的通道是不重要的,跨多个通道的排他性的组合被示出提供与其他发现水平的搜索的希格斯玻色子的灵敏度竞争。我们估计,在5个逆飞秒粒子束的数据下,LHC现有的非优化多轻子搜索可以排除希格斯玻色子,达到95% CL,其质量范围为120-150 GeV,是预测的标准模型截面的几倍。专门针对希格斯玻色子信号的改进建议将进一步提高灵敏度。通过比较标准模型、费米恐惧和b恐惧希格斯玻色子的灵敏度,我们说明了使用多个通道的相关性来辨别产生和衰变模式中的模式的可能性。

英文摘要:

The possibility of searching for the Higgs boson in channels with multiple non-resonant leptons is evaluated in light of recent advances in multi-lepton search techniques at the LHC. The total multi-lepton Higgs signal exceeds the four lepton gold-plated resonant mode, but is spread over many channels with same-sign di-lepton, tri-lepton, and four lepton final states. While any individual channel alone is not significant, the exclusive combination across multiple channels is shown to provide a sensitivity competitive with other discovery level searches for the Higgs boson. We estimate that with 5 inverse femtobarn of data, existing non-optimized multi-lepton searches at the LHC could exclude the Higgs boson to 95% CL at a few times the predicted Standard Model cross section in the mass range 120-150 GeV. Refinements focused specifically on the Higgs boson signal are suggested that would further increase sensitivity. We illustrate the possibility of discerning patterns in production and decay modes using correlations across multiple channels by comparing sensitivities to Standard Model, Fermi-phobic, and b-phobic Higgs bosons.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑